During Spring 1985 two RD Instruments 150 kHz sonars were operated for 37 days in the Beaufort Sea, approximately 450 km northeast of Prudhoe Bay. Alaska. The sonars successfully profiled to a depth of approximately 350 m, with rms velocity precision of 1 cm/sec (for hourly averages). A preliminary analysis indicates that sonar accuracy levels also appear to be of order 1 cm/sec. While rather small, these levels result in significant errors in the Arctic measurements as the naturally occurring signal levels in the Arctic are also quite small. Neverless, at low frequency (less than 0.2 cph), an excellent picture of the internal wavefield is obtained.


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    Title :

    Doppler acoustic velocity profiling in the arctic


    Additional title:

    Die Messung von Stroemungsgeschwindigkeiten im arktischen Meer mittels des Doppler-Effekts


    Contributors:
    Beck, S. (author) / Pinkel, R. (author) / Morison, J. (author)


    Publication date :

    1986


    Size :

    6 Seiten, 15 Bilder, 1 Quelle



    Type of media :

    Conference paper


    Type of material :

    Print


    Language :

    English




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